the land surrounded by the pristine waters of the Arabian Sea, has an
equable climate that varies from season to season.
The presence of the Western Ghats on the eastern side of the state and across the path of the southwest monsoon creates an important climatic zone with copious rainfall on the windward side and a dry belt on the lee side in the east.
The Climate of Kerala can be clasified roughly into three categories. The summer in Kerala lasts from March to May and is followed by the southwest monsoon spell lasting until the middle of October. The northeast monsoons take over the relay around this time and linger on till the month of February.
Even at the height of the monsoons, the temperature rarely dips below a pleasant 18 degrees c. It has a warm and pleasant tropical monsoon climate with seasonally excessive rainfall.
The climate is pleasant from September to February, which is also the peak tourist season. The summer months are warm and humid with a mean max temperature of about 33 degree c.
Winter Max: 21°C ; Min: 18°C
Summer Max: 33°C ; Min: 27°C
Kerala is blessed with plentiful rain, 54% to 85% of which is contributed by the monsoons. Monsoons bring to Kerala two rainy seasons-the southwest monsoon or the Edavappathi, bringing rains during June-September, and the north east monsoon or the Thulavarsham during October to December.
Kerala is directly exposed to the southwest monsoon but also receives rain from the reverse (northeast) monsoon. Rainfall averages about 118 inches (3,000 millimetres) annually statewide, with some slopes receiving more than 200 inches.
The north east monsoon season begins from the middle of October and lasts upto the end of February, though the rain associated with it ceases by December. The total annual rainfall in the state varies from 380 cms over the extreme northern parts to about 180 cms to the south.
The amount of rainfall decreases towards the south almost in proportion with the decrease in altitude of the Western Ghats. July receives the maximum rainfall with all meterological centres recording about 25 rainy days. Neriyamangalam in Ernakulam district records the highest amount of rainfall 104 cms.